LAB 04. Advanced Optical Spectroscopy

UV-Vis Spectrophotometer

PerkinElmer Lambda 35, USA

Specifications:

• Radiation sources: Deuterium lamp (UV) and tungsten-halogen lamp (Visible)
• Spectral range: 190 nm – 1100 nm
• Integrating sphere for reflectance measurements
• Selectable spectral bandwidth: 0.5 – 4 nm.
• Scan speed: 7.5 – 2880 nm/min.
• Detector: silicon photodiode
• Dedicated software

Applications:

• UV-Visible absorption, transmittance and reflectance
• Determination of optical parameters and band-gap energy of materials

UV-Vis-NIR Spectrophotometer

PerkinElmer Lambda 750, USA

Specifications:

• Spectral range: 190 nm – 3300 nm
• Integrating sphere for reflectance measurements
• Selectable spectral bandwidth:
• 0.17 – 5 nm in UV-Vis
• 0.2 – 20 nm in NIR
• Radiation sources: Deuterium lamp (UV) and tungsten–halogen lamp (Visible-NIR)
• Detectors:
• Photomultiplier tube (PMT) for UV-Vis
• Peltier-cooled PbS detector for NIR
• Dedicated software

Applications:

• Absorption, transmittance, and reflectance in UV, visible and near-infrared (NIR)
• Determination of optical parameters and band-gap energy of materials

Contact Angle Goniometer

KINO SL250, USA

Specifications:

• Automatic droplet profile analysis
• High-resolution CCD camera
• Precise liquid dispensing
• Dedicated image processing software

Applications:

• Contact angle measurement
• Qualitative and quantitative evaluation of surface hydrophilicity and hydrophobicity
• Wettability analysis
• Investigation of nanostructured surfaces
• Surface quality control

Accessories, consumables and auxiliary tools available in the lab:

• Mirrors, lenses, and optomechanical components for the configuration, alignment, and optimization of optical paths.
• Sample positioning and alignment systems with fine adjustment along one or multiple axes.
• Tweezers available in a variety of shapes, sizes, and functional configurations, manufactured from stainless steel, PTFE (Teflon), and other laboratory-compatible materials, used for the manipulation and transfer of sensitive samples and specimens.
• Standards and reference materials for instrument calibration, as well as substrates made of optical glass, quartz and silicon.
• Accessories for transmittance and reflectance measurements.
• Reference liquids for contact angle measurements, as well as micropipettes for sample preparation and handling.
• Laboratory gloves, lab coats, safety goggles and other personal protective equipment.